Whirlpool Refrigerator Water Filter 4 - WHR4RXD1 is a refrigerator water filter for refrigerator filtration.It is documented to reduce contaminants including 2, 4-d, asbestos, benzene, carbofuran, cysts, endrin, lead, mercury, p-dichlorobenzene, toxaphene, turbidity, 2, 4-d, as.

• Filter number: 4
• Pack sizes: 1 Pack, 2 Pack, Multi-Pack
• Fits refrigerator types: Bottom mount, French door, Side by side, Bottom mount, French door, Side by side
• Installation type: Twist-in, Twist-in
• NSF certified: 42, 53
• Replacement interval: 6 months / 200 gallons

Source: Whirlpool product data for model WHR4RXD1.